203 lines
7.0 KiB
Markdown
203 lines
7.0 KiB
Markdown
# 🔐 Security Guidelines
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*Comprehensive security guidelines for homelab infrastructure*
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## Overview
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Security best practices and guidelines for maintaining a secure homelab environment while balancing usability and functionality.
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## Network Security
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### Network Segmentation
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- **VLAN isolation**: Separate networks for different service tiers
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- **DMZ configuration**: Isolated zone for public-facing services
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- **Management network**: Dedicated network for administration
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- **IoT isolation**: Separate network for IoT devices
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### Firewall Configuration
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- **Default deny**: Block all traffic by default
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- **Explicit allow**: Only permit required traffic
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- **Geo-blocking**: Block traffic from suspicious countries
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- **Rate limiting**: Prevent brute force attacks
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### VPN Security
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- **WireGuard**: Modern, secure VPN protocol
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- **Tailscale**: Zero-trust mesh networking
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- **Certificate-based auth**: Strong authentication methods
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- **Regular key rotation**: Periodic key updates
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## Access Control
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### Authentication
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- **Multi-factor authentication**: Required for all admin access
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- **Strong passwords**: Minimum complexity requirements
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- **Password managers**: Centralized password management
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- **Biometric authentication**: Where supported
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### Authorization
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- **Principle of least privilege**: Minimal required permissions
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- **Role-based access**: Defined user roles and permissions
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- **Regular access reviews**: Periodic permission audits
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- **Automated deprovisioning**: Remove unused accounts
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### Single Sign-On (SSO)
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- **Authentik integration**: Centralized authentication
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- **SAML/OIDC**: Standard authentication protocols
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- **Session management**: Secure session handling
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- **Audit logging**: Track authentication events
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## Container Security
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### Image Security
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- **Trusted registries**: Use official/verified images
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- **Image scanning**: Vulnerability assessment
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- **Minimal base images**: Reduce attack surface
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- **Regular updates**: Keep images current
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### Runtime Security
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- **Non-root containers**: Run as unprivileged users
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- **Resource limits**: Prevent resource exhaustion
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- **Network policies**: Restrict container networking
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- **Security contexts**: Apply security constraints
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### Secrets Management
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- **Docker secrets**: Secure secret distribution
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- **Environment variables**: Avoid secrets in env vars
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- **External secret stores**: HashiCorp Vault integration
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- **Secret rotation**: Regular secret updates
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## Data Protection
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### Encryption
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- **Data at rest**: Encrypt stored data
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- **Data in transit**: TLS/SSL for all communications
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- **Database encryption**: Encrypt sensitive databases
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- **Backup encryption**: Encrypt all backups
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### Backup Security
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- **3-2-1 rule**: 3 copies, 2 different media, 1 offsite
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- **Immutable backups**: Prevent backup tampering
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- **Backup testing**: Regular restore testing
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- **Access controls**: Restrict backup access
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### Data Classification
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- **Public data**: No special protection required
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- **Internal data**: Standard protection measures
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- **Confidential data**: Enhanced protection required
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- **Restricted data**: Maximum protection measures
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## System Hardening
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### Operating System
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- **Minimal installation**: Remove unnecessary packages
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- **Security updates**: Automated security patching
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- **Service hardening**: Secure service configurations
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- **Audit logging**: Comprehensive system logging
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### SSH Security
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- **Key-based authentication**: Disable password auth
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- **Non-standard ports**: Change default SSH port
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- **Fail2ban**: Automated intrusion prevention
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- **SSH hardening**: Secure SSH configuration
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### Web Services
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- **HTTPS only**: Force encrypted connections
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- **Security headers**: Implement security headers
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- **Input validation**: Sanitize all user input
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- **Rate limiting**: Prevent abuse
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## Monitoring & Incident Response
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### Security Monitoring
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- **Log aggregation**: Centralized log collection
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- **SIEM integration**: Security information management
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- **Anomaly detection**: Identify unusual activity
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- **Real-time alerts**: Immediate threat notification
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### Vulnerability Management
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- **Regular scanning**: Automated vulnerability scans
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- **Patch management**: Timely security updates
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- **Risk assessment**: Prioritize vulnerabilities
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- **Remediation tracking**: Track fix implementation
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### Incident Response
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- **Response plan**: Documented incident procedures
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- **Communication plan**: Stakeholder notification
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- **Evidence preservation**: Forensic data collection
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- **Post-incident review**: Learn from incidents
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## Compliance & Governance
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### Security Policies
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- **Acceptable use**: Define acceptable system use
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- **Data handling**: Data protection procedures
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- **Access management**: User access procedures
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- **Change management**: Secure change processes
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### Documentation
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- **Security procedures**: Document all procedures
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- **Configuration baselines**: Standard configurations
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- **Risk assessments**: Regular risk evaluations
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- **Audit trails**: Maintain audit records
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### Training & Awareness
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- **Security training**: Regular security education
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- **Phishing awareness**: Social engineering protection
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- **Best practices**: Promote security best practices
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- **Incident reporting**: Encourage incident reporting
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## Physical Security
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### Hardware Protection
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- **Secure locations**: Physical access controls
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- **Environmental controls**: Temperature, humidity
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- **Power protection**: UPS, surge protection
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- **Asset tracking**: Hardware inventory management
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### Data Center Security
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- **Access controls**: Restricted physical access
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- **Surveillance**: Security cameras, monitoring
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- **Environmental monitoring**: Temperature, humidity
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- **Fire suppression**: Fire detection and suppression
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## Cloud Security
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### Cloud Services
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- **Shared responsibility**: Understand security models
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- **Identity management**: Cloud identity integration
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- **Data sovereignty**: Data location requirements
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- **Vendor assessment**: Evaluate cloud providers
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### Hybrid Security
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- **Consistent policies**: Uniform security across environments
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- **Secure connectivity**: Encrypted cloud connections
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- **Data classification**: Consistent data handling
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- **Monitoring integration**: Unified security monitoring
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## Regular Security Tasks
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### Daily Tasks
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- **Monitor alerts**: Review security alerts
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- **Check logs**: Review critical system logs
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- **Verify backups**: Ensure backup completion
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- **Update awareness**: Stay informed on threats
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### Weekly Tasks
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- **Vulnerability scans**: Run security scans
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- **Access reviews**: Review user access
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- **Patch assessment**: Evaluate available patches
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- **Incident review**: Review security incidents
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### Monthly Tasks
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- **Security metrics**: Generate security reports
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- **Policy reviews**: Review security policies
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- **Training updates**: Update security training
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- **Vendor assessments**: Review vendor security
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### Quarterly Tasks
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- **Risk assessments**: Comprehensive risk evaluation
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- **Penetration testing**: Security testing
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- **Disaster recovery**: Test recovery procedures
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- **Security audits**: Internal security audits
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---
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**Status**: ✅ Security guidelines implemented across all homelab systems |